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Science Vocabulary
Motion - Forces at Work
| Question | Answer |
|---|---|
| A certain place | position |
| A change of position | motion |
| The things around you that you can sense and use to describe motion | frame of reference |
| A motion that is described based on a frame of reference | relative motion |
| A measure of an object's change in position during a unit of time | speed |
| A push or pull | force |
| A change in the speed or direction of an object's motion | acceleration |
| The metric, or Systeme international (SI), unit of force | newton |
| A force that pulls all objects toward each other | gravity |
| A measure of the force of gravity upon an object | weight |
| A force that keeps objects that are touching each other from sliding past each other easily | friction |